I´ve had the pleasure (well...) of watching Stekelenburg for years at Ajax and I can pretty much safely say that Barca would be making a huge mistake if they signed him. No way is he good enough for that club, not to mention the fact that he even seems to have regressed at Roma.
Thank you for your description of Ter Stegen and good to see we agree on De Gea.
Well his story is really close to Van Der Sar's. But I think he will be one of options,
De Gea will in future be one of best keepers in world so why would United sell him? Now that he is number 1